Old Fence Board

I was practicing my box making when I cam across this old fence board. It was surprisingly figured and had what I thought to be great character. The natural veins in it really grabbed my eye. I’m not sure what type of wood it is.

Is it a hardwood? If so, looks much like a maple pallet wood board I scored recently, after planing and sanding, there were still very visible checks, the boards were stable. Otherwise, probably cedar, being that it was a fence post and weathering can really change the character of a board.

That being said, you did an AMAZING job with it, and i love your featuring of the gnarls and pits. What are the dimensions?